Thanks for your answers; Well... ok for caching, ok for ftp in squid, and ok for ftp (passive-mode) menaged by backet filtering. Telnet is needed by an old version of a "tickets remote ordering" software; it will be upgraded; now I'll make it pass trought my filter as normal telnet to special ports. So I think squid will be enough for me. ...and sorry for that annoyance, I thought that message was sent in the mailing list... (ops!) Bye all, Marco